Electrical plug receptacle



Dec. 30, 1930. G. J. MEUER 1,787,084

ELECTRICAL PLUG RECEPTACLE Filed Aug. 19, 1929 m 1 3&2

INVENTOR.

ATTORNEY may 533 BY c Q g i Patented Dec. 30, 1930 UNITED STATES PATENT OFFICE I enoneua J.

MEUER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO CUTLER- mm, INC.,

OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE ELECTRICAL PLUG RE CEPTACLE Application filed August 19, 1929. Serial 110.886.809.

This invention relates to improvements in electrical plug receptacles.

An object of the invention is to provide a simple and inexpensive plug receptacle adapted for mounting upon the rear surface of a panel or similar support.

Another object is to provide improved means for supporting and insulating the receptacle contacts.

Another object is to minimize the number of loose parts involved in attaching the receptacle to its support.

Another object is to provide a novel form of combined contact and terminal member, together with improved means for rigidly securing the same to a part of the receptacle.

Another object is to provide a plug receptacle having generall improved details of construction as will e pointed out in the course of the following description.

Theaccompanying drawings illustrate certain embodiments of the invention which will now be described, it being understood that the invention is susceptible of embodiment in other formswithout departing from the scope of the appended claims.

In the drawings, Figure 1 is a vertical sectional. view of a completely assembled and mounted plug receptacle constructed in accordance with my invention,a plug cap of well known form being shown partly in elevation and partly in vertical section in separated relation with respect thereto.

Fig. 2 is a bottom plan view of a modified form of plug receptacle.

Fig. 3 is a view partly in elevation and partly in vertical section on thebroken line 3-3 of Fig. 2,the insulating cover plate of the receptacle being shown in separated relation.

Fig. 4 is a plan view of the insulating cover plate shown in Fig. 1.

Fig. 5 is a similar view of the cover plate shown in Fig. 3.

Fig. 6 is a fragmentary plan view of a plug cap having a special arrangement of contact' of suitable insulating material, such as a lamlnated sheet of fiber reinforced material of the phenol-formaldehyde condensation type sold under the trade name of bakelite. Plate 15 is provided with two groups of perforations 16, 17, 18 and 19, 20, 21,the perforations of each group being substaniiallyl alined with each other as shown in Located on the under side of plate 15 is a pair of identically shaped combined contact and terminal members 22 and 23; said members having horizontal portions 22, 23, depending wiring terminal portions 22, 23", and depending reflexed contact clip portions 22, 23.

Rivets 24 and 25 extend downwardly through the perforations 17 20, respectively, in plate 15 and through corresponding perforations in the horizontal portions 22, 23; said rivets being upset as shown at 24, 25 to rigidly and permanently secure said members 22, 23 to plate 15. Horizontal portions 22*, 23 are preferably provided with struck up lugs 22, 23 which are respectively adapted to project into the perforations 16, 19 in plate 15 to thereby, insure alinement of the open ends of refiexed contact clip portions 22, 23 with respect to perforations 18, 21 during assembly of said parts, and to further insure against subsequent rotary displacement of the members 22, 23.

in means may be substituted therefor. The re exed contact clip portions are preferably.

provided with projections or bosses 22, 23 to interlock with the usual typeof contact jacks 26, 27 carried-by the cap 28.

As will be apparent the heads of rivets 24 and 25 project above the upper face of plate 15, and I have provided a plate 29 to cover the same. Plate 29 is preferably of the same size as plate 15 so as to completely overlie the latter, and as shown plate 29 is in the form of a relatively thin sheet of. fiber. Pressed upwardly from plate 29 is an annular hollow boss or roject-ion 30 (Figs. 1 and 4) within which t e rivet heads are accommodated while permitting the surrounding portion of plate 29 to lie flush against the upper face of plate 15.

The disk shaped portion 31 within the contour of boss 30'is preferably spaced slightly from plate 15; and as shown said boss acts as a finding rin to facilitate insertion of the cap contact jac into the perforations 32, 33 which are alined with the perforations 18, 21 in plate 15.

. Also as shown in Fig. 1 the boss 30 is adapted to project upwardly through a correspondingly shaped perforation 34 in a metallic supporting panel 35, said panel and the plates 15 and 29 being provided with a plurality of registering perforations (such as those shown in plate 29 at 36, 37 in Fig. 4) to receive securing rivets or the like, one of which is shown at 38 in Fig. 1.

The blank 39 shown in Fig. 7 is preferably severed from a continuous strip in a manner to provide the beveled edge 40 at one end thereof whereby upon bending of the blank to the final form illustrated in "the drawings such beveled ed e forms in effect a continuation of the flareg open end of the reflexed contact clip (see 22 in Fig. 10).

The combined contact and terminal members employed in constructing the receptacle illustrated in Figs. 2, 3 and 5 are identical with those aforedescribed, and the same have been designated by corresponding characters of reference. In this construction, however, the two groups of perforations 16, 17, 18 and 19, 20, 21 are arranged diagonally across the punched plate 15 of insulating material, and the two groupsof perforations are laterally offset with respect to each other, as best illustrated in Fig. 2.

In other words, the combined contact and terminal members 22 and 23 in Fig. 2 have merely been angularly displaced in a clockwise direction with reference to the relative positions thereof in Fig. 1. Thus, while the contact clip portions 22, 23 of Fig. 2 are located in parallel relation they are re atively closer together than in the arrangement aforedescribed, which in conjunction with the lateral offsetting thereof aforementioned, requires a special arrangement of the contact iiacks of the cap 28, as indicated at 26 in Also as shown in Fig. 3, small metal wash- (am 41 and 42 may be interposed between the respective heads of rivets 24, 25 and the upper surface of plate 15 to facilitate the riveting operation and to provide for more securely attaching the contactand terminal members to said plate. The fibercover plate 29 is accordingly preferably provided with a hollow diskshaped boss or projection 43, said boss being of suflicient diameter to accommodate the washers 41, 42 and of suflicient height to accommodate the aforementioned rivet heads. The panel or support (not shown) is provided with a perforation of sufficient size to permit boss 43 to project therethrough, and the plates are riveted or otherwise secured to the panel in the manner described in connection with Fig. l,-perforations 37", 36 being provided in cover plate 29 and perforations 44, 45 being provided in plate 15 for this purpose.

Perforations 32, 33 in cover plate 29 are arranged in the manner illustrated to register with the perforations 18, 21 in plate 15 and the reflexed contact clip portions 22, 23. Also it is to be noted that the boss 43 is adapted to act as a limiting support for the plug cap when the contact jacks of the latter are brought into full cooperative engagement with the reflexed contact clips of the receptacle.

If desired washers of the character illustrated at 41, 42 may be interposed between the heads of the rivets, 24, 25 and the upper face of plate 1.5 in Fig. 1,in which event the cover plate 29 will preferabl be provided with a boss similar to that s iown at 43 in Figs. 3 and 4.

\Vhat I claim as new and desire to secure by Letters Patent is: Y

1. A plu receptacle comprising a relatively thin fiat plate of insulating material, refiexed contact clips located on the under side of said plate and permanently secured thereto by rlve'ts penetrating the latter, a thin fiber plate superimposed upon said first mentioned plate and having a circular boss formed therein to accommodate the heads of said rivets, a panel to the under side of which said plates are secured by common fastening means, said panel having a perforation through which said boss projects, and said plates having perforations alined with said clips to provide for insertion of plug contact jacks between the .reflexed portions of the latter.

2, A lug receptacle comprising a punched having lugs struck upwardly therefrom to enter said erforations, refiexed contact cli portions epe'ndintg from said horizonta portions, a punche and pressed plate of insulating material superimposed upon said first mentioned plate and adapted to cover the rivet heads, and said plates having perforations alined with each other and with .said contact clip portions to provide for insertion of plug jacks into engagement with the latter.

3. As an article of manufacture, a plug receptacle comprising a flat unched plate of insulating material, said p ate having two spaced groups of perforations, the perforations in each 0111) being substantially alined with each ot er, a pair of strip metal elements each bent to provide a horizontal portion, a depending reflexed contact clip portion and a depending wiring terminal portion, said elements bein located on the under side of saidplate, a r1vet penetrating each horizontal portion and one of the perforations in each group to rigidly and perma nently secure said elements to said plate,

other of said perforations being alined with the reflexed contact clip portions of said elements respectively, and lugs struck outwardly from said elements and extending into other of said perforations to secure said elements against rotary movement relative to said plate. I

4. As an article of manufacture, a plug receptacle comprisin a fiat punched plate of insulating materia said plate having two spaced groups of perforations, the perforations in each group being substantially alined with each other, apair of strip metal elements each bent to rovide a horizontal portion, :1 depending re exed contact clip portion and a depending wiring terminal portion, said elements being located on the under side of said plate, a rivet penetrating each horizontal portion and one of the perforations in each group to rigidly and permanently secure said elements to said plate, other of said perforations being alined with the reflexed contact clip portions of said elements respectively, lu s struck outwardly from said elements an extending into other of said perforations to secure said elements agalnst rotary movement relative to said plate, and a perforated thin fiber plate superimposed upon said first mentioned plate, said fiber plate having a hollow boss to accommodate the rivet heads upon the upper side of said first mentioned plate;

5. As an article of manufacture, a plug receptacle comprising a flat punched plate of insulating material, said plate having two spaced groups of perforations, the perforatlons in each group being substantially alined with each other, a pair of strip metal elements each bent to provide a horizontal portion, a depending reflexed contact clip portion and a dependin wiring terminal portion, said elements being located on the under side of said plate, a rivet penetratin each horizontal portion and one of the per orations in each group to rigidly and permanently secure said elements to said plate, other of said perforations being alined with the reflexed contact clip portions of said elements respectively, lugs s'truck outwardly from said elements and extending into other of said perforations to secure said elements against rotary movement relative to said plate, a perforated thin fiber plate superimposed upon said first mentioned plate, said fiber plate having a hollow boss to accommodate the rivet heads upon the upper side of said first mentioned plate, and said plates having additional registering perfora tions to provide for attachment thereof to the under side of a perforated panel or the like by common fastening means.

6. As an article of manufacture, a combined contact and terminal member for plug receptacles, said member comprising a horizontal portion to be permanently secured to the under side of a suitable support, a reflexed contact clip portion depending from said horizontal portion, the free end of said reflexed clip portion being flared outwardly to provide a guide for a plug jack, a wiring terminal portion also depending from said horizontal portion, and a lug struck upwardly from said horizontal portion and adapted for positive engagement with cooperating shoulders on said support.

7. As an article of manufacture, a plu receptacle comprising a punched plate 0 insulating material, a pair of combined contact and terminal members each consisting of astrip of metal having a horizontal portion, a depending refiexed contact clip portion-and a depending wiring terminal portion, means for securing said members to the under side of said plate, said means comprising rivets penetrating said plate and said horizontal portions respectively, metallic washers interposed between the heads of said rivets and the upper side of said plate, cooperative means integral with said plate and said members to prevent relative rotation of the latter, and a thin fiber plate superimposed upon said first mentioned plate, said fiber plate having a circular hollow boss to accommodate said washers and said rivet heads and to provide a limiting stop for a plug cap, said plates havin alined perforations to provide access to sai reflexed contact clips.

8. As an article of manufacture, a cover for an insulating plate having receptacle contacts secured to the under side thereof by means of rivets extending therethrough, said cover consisting of a thin plate of fiber having a circular hollow boss formed therein to accommodate the rivet heads, said boss also act ing as a limiting stop for a plug cap when the contact jacks of'the latter are brought. into full cooperative engagement with the receptacle contacts.

In Witness whereof, I have hereunto subscribed my name.

GEORGE J. MEUER. 

